期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 71, 期 18, 页码 6942-6951出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo0610208
关键词
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An enantioselective synthesis of the fully elaborated tricyclic decahydrofluorene core (ABC-ring system) of GKK1032s, novel antimicrobial and antitumor agents, has been accomplished for the first time by employing a highly diastereoselective intramolecular Diels-Alder (IMDA) reaction. The key substrate for the IMDA reaction was efficiently prepared through (i) an intermolecular Diels-Alder reaction between a siloxydiene and an optically active enone derived from D-mannitol to construct the appropriately functionalized C-ring and (ii) CuCl-promoted Stille coupling of an (E)-vinyl iodide and a vinylstannane to install the requisite triene side chain as the crucial steps.
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